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Ocellated Shell-dweller© Elma from Reykjavík / CC BY 2.0

Ocellated Shell-dweller

The Ocellated Shell-dweller (Lamprologus ocellatus) is a tiny cichlid from Lake Tanganyika that tops out around 5 to 6cm, making it one of the smallest species in the shell-dwelling cichlid group. Given an empty snail shell in the tank, it will bury and re-dig it in the sand until the angle suits it, then treat that shell as both a home and a nursery. Despite its size, it holds its ground fiercely, flaring its fins at anything that comes near its chosen shell, which makes for a fun contrast with its cute appearance. It's generally considered beginner-friendly, letting hobbyists observe distinctive shell-based behavior and breeding in a modestly sized tank.

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Ocellated Shell-dweller key facts

Care level
Beginner-friendly
Lifespan
3-5 years
Size
5-6cm
Temperature
23〜27℃
Diet
Mainly frozen and live foods, plus prepared foods
Tank
From about 45 x 30 x 30cm (40 litres). Lay a deep sand bed and place more empty snail shells than there are fish.
Water Temperature & Quality
23-27C, pH 7.5-9.0, 10-25 dGH. Maintain high-pH hard water.
Tank Mates
It strongly defends the area around its shell on the bottom. Combine it with Neolamprologus brichardi, smaller Julidochromis or open-water Cyprichromis that use other levels.
Diet & Feeding
Base the diet on frozen and live foods; dried foods are usually accepted. Use sinking foods for fish that stay near their shell.
Breeding & Spawning
A shell brooder. Eggs hatch in about three days and fry swim after roughly ten, guarded by the female alone. Rearing the fry separately raises survival.
Health & Notes
Fights escalate when shells are scarce. It digs through the sand, so assume equipment and decor set on the bottom will be buried.
TraitsAfrican cichlidLake TanganyikaShell-dwellerSmall species

About Ocellated Shell-dweller

A small Lake Tanganyika cichlid that lives in snail shells. Here's an easy guide to the Ocellated Shell-dweller's traits, temperament, and care basics.

7 things to know before welcoming a Ocellated Shell-dweller

  1. 1Shells Are Essential

    Provide several empty snail shells in the tank. This species relies on shells as both a home and a spawning site, burying or digging out its favorite shell to adjust the angle. Without shells, the fish loses both its natural behavior and its main hiding spot.

  2. 2Strong Territorial Instinct

    Despite its small 5-6cm size, this fish stakes out a firm territory around its chosen shell and flares its fins at anything that gets close. It can be feisty toward both its own kind and other fish, so give it plenty of space.

  3. 3Choose Tankmates Carefully

    Because of its territorial nature, this fish can clash with slow-moving or bottom-dwelling species. If keeping tankmates, choose fish that occupy a different part of the water column and make sure there's enough distance and hiding space in the tank.

  4. 4Prefers Hard, Alkaline Water

    As a Lake Tanganyika native, this species prefers hard, slightly alkaline water. Keep in mind that the water chemistry you need to set up differs from what typical community tropical fish require.

  5. 5Compact Tank Space

    Since adults max out around 5-6cm, a relatively compact tank can work as long as there's room to place shells. Still, giving more floor space than its size suggests will help it settle in, since it needs room to hold a territory.

  6. 6Easy to Breed at Home

    They lay eggs inside a favored shell, and afterward you can watch the parents tending fry near the shell. This species is considered beginner-friendly, making it an approachable choice for observing breeding behavior.

  7. 7Use Soft Sand Substrate

    Since this fish digs shells in and out of the substrate, choose fine, soft sand rather than coarse gravel. Rough gravel can injure the fish or make it hard for it to move shells around properly.

Frequently asked questions about Ocellated Shell-dweller

Q.Can it be kept in a small tank?
A.Yes, adults stay around 5-6cm, so a relatively compact tank can work as long as there's room to place shells. Since it holds a territory, though, it's best to give it a bit more floor space than its size suggests.
Q.What kind of shells should I provide?
A.Sink several empty snail shells large enough for the fish to fit inside completely. It will bury and dig them out on its own, choosing a favorite shell to use as its home and spawning site.
Q.Can it live with other fish?
A.Although small, it's quite territorial and may flare its fins at fish that come too close. If you add tankmates, pick species that occupy a different part of the water column and make sure there's enough hiding space and distance.
Q.Is it easy to keep for beginners?
A.Yes, this species is generally considered beginner-friendly. That said, as a Lake Tanganyika native it prefers hard, slightly alkaline water, so it's worth setting up your water chemistry with that in mind.
Q.Is it easy to breed?
A.It lays eggs inside a favorite shell, and you can often watch the parents tending the fry afterward. Thanks to its manageable care needs, breeding is approachable even in a home aquarium.

Useful tools for Ocellated Shell-dweller care

💧Aquarium Volume CalculatorCalculate water volume, weight, and heater wattage from tank dimensions🧪Water Quality CheckerFind compatible fish, shrimp, plants & corals based on pH, temperature & hardness🍽️Feeding GuideCheck feeding frequency, portion sizes & supplements by species and growth stage🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🔄Nitrogen Cycle GuideAuto-calculate bacteria colonization timeline for new tank cycling🗓️Seasonal Care CalendarMonthly care events and seasonal management tips at a glance🚿Water Change CalculatorAuto-calculate optimal water change frequency and volume by tank size and fish count🐠Stocking CalculatorCalculate max fish capacity for your tank size with overstocking alertsElectricity Cost SimulatorCalculate monthly and annual electricity costs for care equipment with presets🧬Breeding PlannerSelect parent varieties to view breeding schedules and offspring patterns🏞️Tank Layout PlannerGet substrate, plant & hardscape suggestions based on tank size and style🧮Care Cost SimulatorEstimate initial, monthly & annual costs by category, care level and quantity⚖️Species Comparison ToolCompare two species side by side: care difficulty, size, lifespan & temperature🎯Pet Match DiagnosticAnswer 7 questions to find your top 3 perfect pets📋Lifetime Cost SimulatorEstimate lifespan and lifetime costs by species for dogs, cats, reptiles and more🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance💊Medication Dosage CalculatorCalculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Ocellated Shell-dweller in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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